全文获取类型
收费全文 | 1868篇 |
免费 | 313篇 |
国内免费 | 191篇 |
专业分类
2372篇 |
出版年
2023年 | 24篇 |
2022年 | 30篇 |
2021年 | 34篇 |
2020年 | 81篇 |
2019年 | 95篇 |
2018年 | 96篇 |
2017年 | 111篇 |
2016年 | 83篇 |
2015年 | 75篇 |
2014年 | 77篇 |
2013年 | 223篇 |
2012年 | 79篇 |
2011年 | 74篇 |
2010年 | 40篇 |
2009年 | 80篇 |
2008年 | 76篇 |
2007年 | 84篇 |
2006年 | 104篇 |
2005年 | 108篇 |
2004年 | 72篇 |
2003年 | 82篇 |
2002年 | 62篇 |
2001年 | 49篇 |
2000年 | 37篇 |
1999年 | 42篇 |
1998年 | 40篇 |
1997年 | 31篇 |
1996年 | 25篇 |
1995年 | 21篇 |
1994年 | 34篇 |
1993年 | 20篇 |
1992年 | 22篇 |
1991年 | 12篇 |
1990年 | 7篇 |
1989年 | 12篇 |
1988年 | 13篇 |
1987年 | 11篇 |
1986年 | 21篇 |
1985年 | 21篇 |
1984年 | 17篇 |
1983年 | 14篇 |
1982年 | 8篇 |
1981年 | 19篇 |
1980年 | 17篇 |
1979年 | 16篇 |
1978年 | 14篇 |
1977年 | 27篇 |
1976年 | 19篇 |
1975年 | 7篇 |
1974年 | 4篇 |
排序方式: 共有2372条查询结果,搜索用时 15 毫秒
111.
Michael Potegal 《Aggressive behavior》1979,5(4):353-373
Field observations of “surplus killing” and laboratory studies of operant performance rewarded by prey-killing opportunities suggest that predatory behavior is positively reinforcing. Similarly, both repeated encounter and operant performance studies suggest that intraspecific aggression can be positively reinforcing for successful aggressors. While a few studies suggest that defensive aggression under aversive conditions may also be positively reinforcing, it appears that when appropriate response modes are available escape and/or avoidance are preferred to attack. Studies of the reinforcing properties of aggression-eliciting brain stimulation are in general agreement with these conclusions, but methodological problems with these latter observations render them less compelling. The progressive escalation of aggression seen in “warm-up effects” of birds and fish, “priming effects” of mice, and ecstatic violence of humans may be analogous processes based on the positively self-reinforcing characteristics of some kinds of aggression. The transient reductions of aggression which appear as refractory periods and satiation effects in a variety of species may reflect temporary reductions in the reinforcing value of aggression. All these temporal effects must be considered in the evaluation of experiments on the reinforcing value of aggression. More generally, it is possible that these temporal fluctuations reflect the operation of common motivational processes (aggressive states) which regulate overt aggression by changing its reinforcing value. 相似文献
112.
Male ice hockey fans (N = 78) completed a battery of biographical, social, cognitive, and individual differences measures that had previously been administered piecemeal to spectators found in attendance at games. Participants' self-reported likelihood of joining in a crowd disturbance served as the dependent measure. The individual differences measures included physical aggression, anger, impulsivity, psychopathy, sensation seeking, and public self-consciousness. All but public self-consciousness was positively related to subjects' likelihood of escalating a disturbance. Participants' age, number of accompanying males, the false consensus effect, number and recency of fights, and attending in anticipation of watching player fights were also related to the dependent measure. A multiple regression analysis yielded a multiple R = .807, accounting for 65% of the variance. The time since the participant was last in a fight and liking to watch player fights emerged as significant predictors. Aggr. Behav. 24:219–226, 1998. © 1998 Wiley-Liss, Inc. 相似文献
113.
The present work analyzes the relationships between the dimensions of temperament and the exteriorized emotions of aggression and anger. Temperament was assessed by mothers using the Dimensions of Temperament Survey‐Revised, while aggression and anger were self‐reported by the children using the Scale of physical and Verbal Aggression and the State–Trait Anger Expression Inventory for Children. The sample studied was made up of 293 children (49.83% boys; 50.17% girls) with a mean age of 11.13 years. The results showed that temperamental difficulties give rise to exteriorized emotions, especially anger. Predictive values of temperament on aggression and anger ranged from 1% to 7% of explained variance. Aggr. Behav. 32:207–215, 2006. © 2006 Wiley‐Liss, Inc. 相似文献
114.
115.
116.
117.
In the current study, two mediational mechanisms, parenting practices and children's beliefs about aggression, were hypothesized to account for the relationship between perceived neighborhood danger and childhood aggression. Using structural equation modeling, data were analyzed from an inner-city school-based sample of 732 predominantly African American 5th graders. Results suggested that perceived neighborhood danger was associated with strong positive beliefs about aggression, which in turn was associated with high levels of aggression. The hypothesized mediating role of parenting practices (restrictive discipline, parental monitoring, and parental involvement) on the relation between perceived neighborhood danger and child aggression was not supported. However, the current findings suggest that children's positive beliefs about aggression mediated the relationship between restrictive discipline and aggression. Directions for future research are discussed. 相似文献
118.
Sarah Lenington Lee C. Drickamer Ami Sessions Robinson Mark Erhart 《Aggressive behavior》1996,22(2):135-145
Work on the genetic region of the house mice known as the t-complex has produced the hypothesis that mice heterozygous for t-haplotypes (+/t) may have a selective advantage over wild-type (+/+) males owing to the greater aggressiveness of +/t males. We tested this hypothesis by examining the behavior of +/+ and +/t mice placed in four large outdoor enclosures. We found that +/t males were dominant over +/+ males. Furthermore, in the outdoor enclosures +/t males had higher survivorship than +/+ males, both as adults and juveniles. However, males of the two genotypes did not differ in home range size. We suggest that t-haplotypes may be, in part, maintained in mouse populations because of a selective advantage in heterozygous males. © 1996 Wiley-Liss, Inc. 相似文献
119.
Reactive and proactive aggression: Similarities and differences 总被引:2,自引:1,他引:2
The purpose of the current study was to elaborate the nomological net surrounding the constructs of reactive (RA) and proactive aggression (PA). Typically examined in the context of children, the current study utilized a sample of 211 young adults to examine the relations between reactive and proactive aggression and measures of general personality and social information processing, as well as maladaptive behavioral correlates such as crime, substance use, and riskier sex. Both raw and residualized scores were examined. Using raw scores, the primary differences between RA and PA were related to Neuroticism (i.e., RA more strongly related) and externalizing behaviors (i.e., PA more strongly). The authors comment on the similarity of findings when using raw scores and the divergence of findings using residualized scores and argue for a cautious interpretation of differences based on residualized scores. The authors conclude that the role of Neuroticism warrants further exploration as a means for understanding the heterogeneity of aggressive behavior. 相似文献
120.